1285289915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1\times {\mathrm{311}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 1972518912

約数和(自身を除く): 687228997

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 217, 293, 311, 403, 455, 1085, 1465, 1555, 2015, 2051, 2177, 2821, 3809, 4043, 9083, 9641, 10255, 10885, 14105, 19045, 20215, 26663, 28301, 45415, 48205, 63581, 67487, 91123, 118079, 125333, 133315, 141505, 317905, 337435, 455615, 590395, 626665, 637861, 826553, 877331, 1184599, 2824813, 3189305, 4132765, 4386655, 5922995, 8292193, 14124065, 19773691, 36722569, 41460965, 98868455, 183612845, 257057983, 1285289915]

約数ペア:

[(1, 1285289915), (5, 257057983), (7, 183612845), (13, 98868455), (31, 41460965), (35, 36722569), (65, 19773691), (91, 14124065), (155, 8292193), (217, 5922995), (293, 4386655), (311, 4132765), (403, 3189305), (455, 2824813), (1085, 1184599), (1465, 877331), (1555, 826553), (2015, 637861), (2051, 626665), (2177, 590395), (2821, 455615), (3809, 337435), (4043, 317905), (9083, 141505), (9641, 133315), (10255, 125333), (10885, 118079), (14105, 91123), (19045, 67487), (20215, 63581), (26663, 48205), (28301, 45415)]